In Figure REF c we also include for reference the dust opacities used in [1]} at their assumed \(f_{\textrm {d/g}}=0.01\) . We computed them with OpTool for their pure-silicate, silicate–water–carbon (“mixture”), and pure-graphite cases (respectively from weakest to strongest).
The lowest dust opacity of [1]}, their “silicate” case (\(\kappa _{\mathrm {dust,\,H}\,\alpha }=2.9\)  cm\(^2\)  g\(^{-1}_{\textrm {gas}}\) ), is consistent with our opacities, whereas the two other cases are 10–20 times higher than ours.
Here again, however, the range of intrinsic opacities is almost identical to ours, with the real difference only in the adopted dust-to-gass mass ratio.
